Both Republicans and Democrats are voting Tuesday in open primaries. A person does not have to be a registered member of a party to vote in the primary.

How many delegates are up for grabs?

There are 57 Republican delegates and 92 Democratic delegates.

How will the delegates be awarded?

For the Republicans: Winning any of the nine congressional districts garners three delegates each, while 30 of the delegates go to the overall winner

For the Democrats: 56 delegates up for grabs in the congressional districts , with 27 going to the overall winner. The nine superdelegates go on to vote at the Philadelphia convention in July and are not bound by the primary voters.

How many needed to win the nomination?

The Republican hopeful needs to win the support of a majority of the 2,472 delegates.

The Democratic nominee will need to win a majority of the 4,765 delegates.